def uname(host_os=detect_host_os()):
"""
Returns detailed host information.
:depends on: [host_os.uname]
"""
return " ".join(host_os.uname())
def uname(host_os=detect_host_os()):
"""
Returns detailed host information.
:depends on: [host_os.uname]
"""
return " ".join(host_os.uname())
def uptime(host_os=detect_host_os()):
"""
Returns system uptime in seconds.
:depends on: [host_os.uptime]
"""
return host_os.uptime()
def maxproc(host_os=detect_host_os()):
"""
Returns maximum number of running processes
:depends on: [host_os.maximum_number_of_running_processes]
"""
return host_os.max_number_of_running_processes()
def uptime(host_os=detect_host_os()):
"""
Returns system uptime in seconds.
:depends on: [host_os.uptime]
"""
return host_os.uptime()
def maxproc(host_os=detect_host_os()):
"""
Returns maximum number of running processes
:depends on: [host_os.maximum_number_of_running_processes]
"""
return host_os.max_number_of_running_processes()
def hostname(hostname_type='host', host_os=detect_host_os()):
"""
Returns host name.
:raises: WrongArgumentError if unknown hostname_type is supplied
:depends on: [host_os.hostname, host_os.AVAILABLE_HOSTNAME_TYPES]
"""
validate_mode(hostname_type, host_os.AVAILABLE_HOSTNAME_TYPES)
return host_os.hostname(hostname_type)
def hostname(hostname_type='host', host_os=detect_host_os()):
"""
Returns host name.
:raises: WrongArgumentError if unknown hostname_type is supplied
:depends on: [host_os.hostname, host_os.AVAILABLE_HOSTNAME_TYPES]
"""
validate_mode(hostname_type, host_os.AVAILABLE_HOSTNAME_TYPES)
return host_os.hostname(hostname_type)
def size(mode='total', host_os=detect_host_os()):
"""
Returns an amount of memory of specified mode
:param mode: Varies with host_os
:raises: WrongArgument if unsupported mode is supplied
:depends on: [host_os.AVAILABLE_MEMORY_TYPES, host_os.memory]
"""
validate_mode(mode, host_os.AVAILABLE_MEMORY_TYPES)
return host_os.memory()[mode]
def size(mode='total', host_os=detect_host_os()):
"""
Returns an amount of memory of specified mode
:param mode: Varies with host_os
:raises: WrongArgument if unsupported mode is supplied
:depends on: [host_os.AVAILABLE_MEMORY_TYPES, host_os.memory]
"""
validate_mode(mode, host_os.AVAILABLE_MEMORY_TYPES)
return host_os.memory()[mode]
def size(device='all', mode='free', host_os=detect_host_os()):
"""
Returns free and total swap size converted according to mode
:param mode: one of free, total, used, pfree, pused
:raises: WrongArgument if unsupported mode is supplied
:depends on: [host_os.swap_size]
"""
validate_mode(mode, SIZE_CONVERSION_MODES)
free, total = host_os.swap_size(device)
return convert_size(free, total, mode)
def size(device="all", mode="free", host_os=detect_host_os()):
"""
Returns free and total swap size converted according to mode
:param mode: one of free, total, used, pfree, pused
:raises: WrongArgument if unsupported mode is supplied
:depends on: [host_os.swap_size]
"""
validate_mode(mode, SIZE_CONVERSION_MODES)
free, total = host_os.swap_size(device)
return convert_size(free, total, mode)
def size(filesystem, mode="total", host_os=detect_host_os()):
"""
Returns free and total fs size converted according to mode
:param filesystem: what filesystem to check
:type filesystem: str
:param mode: one of free, total, used, pfree, pused
:raises: WrongArgument if unsupported mode is supplied
:depends on: [host_os.fs_size]
"""
validate_mode(mode, SIZE_CONVERSION_MODES)
free, total = host_os.fs_size(filesystem)
return convert_size(free, total, mode)
def size(filesystem, mode="total", host_os=detect_host_os()):
"""
Returns free and total fs size converted according to mode
:param filesystem: what filesystem to check
:type filesystem: str
:param mode: one of free, total, used, pfree, pused
:raises: WrongArgument if unsupported mode is supplied
:depends on: [host_os.fs_size]
"""
validate_mode(mode, SIZE_CONVERSION_MODES)
free, total = host_os.fs_size(filesystem)
return convert_size(free, total, mode)
def out_of_memory(device='all', mode='count', host_os=detect_host_os()):
"""
Returns total number of pages written to swap or total number of write
operations or sectors written to swap device
:param mode: should be one of {'count', 'pages', 'sectors'}
:raises: WrongArgumentError if mode is pages and device is not 'all'
:raises: WrongArgumentError if mode is unknown
:raises: WrongArgumentError if mode is unavailable on this host_os
:depends on: [
host_os.swap_info,
host_os.AVAILABLE_DISK_DEVICE_STATS_TYPES,
host_os.swap_device_names,
host_os.disk_device_stats,
]
"""
return into_out_of('write', device, mode, host_os)
def outgoing(interface_name, mode="bytes", host_os=detect_host_os()):
"""
Returns amount of sent bytes or packets, dropped outgoing packets or
send errors
:depends on: [host_os.net_interface_names, host_os.net_interface_info]
:raises: WrongArgument if unsupported mode is supplied
:raises: WrongArgument if interface is not present on this host
:type interface_name: str
"""
validate_mode(mode, NET_MODES)
interface_names = host_os.net_interface_names()
validate_mode(interface_name, interface_names)
info = host_os.net_interface_info(interface_name)
return info._asdict()["{direction}_{mode}".format(direction='out',
mode=mode)]
def out_of_memory(device="all", mode="count", host_os=detect_host_os()):
"""
Returns total number of pages written to swap or total number of write
operations or sectors written to swap device
:param mode: should be one of {'count', 'pages', 'sectors'}
:raises: WrongArgumentError if mode is pages and device is not 'all'
:raises: WrongArgumentError if mode is unknown
:raises: WrongArgumentError if mode is unavailable on this host_os
:depends on: [
host_os.swap_info,
host_os.AVAILABLE_DISK_DEVICE_STATS_TYPES,
host_os.swap_device_names,
host_os.disk_device_stats,
]
"""
return into_out_of("write", device, mode, host_os)
def incoming(interface_name, mode="bytes", host_os=detect_host_os()):
"""
Returns amount of received bytes or packets, dropped incoming packets or
receive errors
:depends on: [host_os.net_interface_names, host_os.net_interface_info]
:raises: WrongArgument if unsupported mode is supplied
:raises: WrongArgument if interface is not present on this host
:type interface_name: str
"""
validate_mode(mode, NET_MODES)
interface_names = host_os.net_interface_names()
validate_mode(interface_name, interface_names)
info = host_os.net_interface_info(interface_name)
return info._asdict()[
"{direction}_{mode}".format(direction='in', mode=mode)
]
def num(name=ALL_PROCESSES, user=ALL_USERS, state='all', cmdline=None,
host_os=detect_host_os()):
"""
Returns number of userspace processes matching filter
:depends on: [host_os.process_infos, host_os.uid]
:raises: WrongArgument if unsupported state is supplied
:raises: OperatingSystemError if user is invalid
"""
validate_mode(state, PROC_NUM_MODES)
uid = None
if user != ALL_USERS:
uid = host_os.uid(user)
number_of_processes = 0
for process_info in host_os.process_infos():
if _matches_filter(process_info, name, uid, state, cmdline):
number_of_processes += 1
return number_of_processes
def read(device='all', stat_type='operations', mode='avg1',
host_os=detect_host_os()):
"""
Returns total number of read operations, or bytes or sectors read from
device.
:param device: Should be either all or device name
:param stat_type: Should be one of
host_os.AVAILABLE_DISK_DEVICE_STATS_TYPES
:raises: WrongArgumentError if unknown device is supplied
:raises: WrongArgumentError if unknown stat_type is supplied
:depends on: [
host_os.AVAILABLE_DISK_DEVICE_STATS_TYPES,
host_os.disk_device_names,
host_os.disk_device_stats,
host_os.disk_device_stats_shifted
]
"""
return read_write('read', device, stat_type, mode, host_os)
def load(cpu='all', mode='avg1', host_os=detect_host_os()):
"""
Returns average number of processes that are either in a runnable or
uninterruptable state.
:raises: WrongArgumentError if unknown cpu is supplied
:raises: WrongArgumentError if unknown mode is supplied
:depends on: [host_os.system_load, host_os.cpu_count]
"""
validate_mode(cpu, ['all', 'percpu'])
validate_mode(mode, AVERAGE_MODE.keys())
system_load = host_os.system_load()
value = system_load._asdict()[mode]
if cpu == 'percpu':
value /= host_os.cpu_count()
return value
def load(cpu='all', mode='avg1', host_os=detect_host_os()):
"""
Returns average number of processes that are either in a runnable or
uninterruptable state.
:raises: WrongArgumentError if unknown cpu is supplied
:raises: WrongArgumentError if unknown mode is supplied
:depends on: [host_os.system_load, host_os.cpu_count]
"""
validate_mode(cpu, ['all', 'percpu'])
validate_mode(mode, AVERAGE_MODE.keys())
system_load = host_os.system_load()
value = system_load._asdict()[mode]
if cpu == 'percpu':
value /= host_os.cpu_count()
return value
def util(cpu='all', state='user', mode='avg1', host_os=detect_host_os()):
"""
Returns average percentage of time spent by cpu in a state over a period
of time
:raises: WrongArgumentError if unknown cpu is supplied
:raises: WrongArgumentError if unknown state is supplied
:raises: WrongArgumentError if unknown mode is supplied
:depends on: [host_os.cpu_count, host_os.cpu_times_shifted,
host_os.cpu_times]
"""
validate_mode(state, CPU_TIMES)
available_cpus = list(range(host_os.cpu_count()))
if cpu == 'all':
cpus = available_cpus
else:
cpu = int(cpu)
validate_mode(cpu, available_cpus)
cpus = [cpu]
validate_mode(mode, AVERAGE_MODE.keys())
time_in_state = 0
time_total = 0
for cpu in cpus:
shifted_cpu_times = host_os.cpu_times_shifted(cpu, AVERAGE_MODE[mode])
if shifted_cpu_times is not None:
current_cpu_times = host_os.cpu_times(cpu)
cpu_time_in_state = (current_cpu_times._asdict()[state] -
shifted_cpu_times._asdict()[state])
cpu_time_total = (sum(current_cpu_times) - sum(shifted_cpu_times))
time_in_state += cpu_time_in_state
time_total += cpu_time_total
return (((time_in_state * 100) / time_total)
if time_total != 0
else 0.0)
def util(cpu='all', state='user', mode='avg1', host_os=detect_host_os()):
"""
Returns average percentage of time spent by cpu in a state over a period
of time
:raises: WrongArgumentError if unknown cpu is supplied
:raises: WrongArgumentError if unknown state is supplied
:raises: WrongArgumentError if unknown mode is supplied
:depends on: [host_os.cpu_count, host_os.cpu_times_shifted,
host_os.cpu_times]
"""
validate_mode(state, CPU_TIMES)
available_cpus = list(range(host_os.cpu_count()))
if cpu == 'all':
cpus = available_cpus
else:
cpu = int(cpu)
validate_mode(cpu, available_cpus)
cpus = [cpu]
validate_mode(mode, AVERAGE_MODE.keys())
time_in_state = 0
time_total = 0
for cpu in cpus:
shifted_cpu_times = host_os.cpu_times_shifted(cpu, AVERAGE_MODE[mode])
if shifted_cpu_times is not None:
current_cpu_times = host_os.cpu_times(cpu)
cpu_time_in_state = (current_cpu_times._asdict()[state] -
shifted_cpu_times._asdict()[state])
cpu_time_total = (sum(current_cpu_times) - sum(shifted_cpu_times))
time_in_state += cpu_time_in_state
time_total += cpu_time_total
return (((time_in_state * 100) / time_total) if time_total != 0 else 0.0)
def write(device='all',
stat_type='operations',
mode='avg1',
host_os=detect_host_os()):
"""
Returns total number of read operations, or bytes or sectors read from
device.
:param device: Should be either all or device name
:param stat_type: Should be one of
host_os.AVAILABLE_DISK_DEVICE_STATS_TYPES
:raises: WrongArgumentError if unknown device is supplied
:raises: WrongArgumentError if unknown stat_type is supplied
:depends on: [
host_os.AVAILABLE_DISK_DEVICE_STATS_TYPES,
host_os.disk_device_names,
host_os.disk_device_stats,
host_os.disk_device_stats_shifted
]
"""
return read_write('write', device, stat_type, mode, host_os)
def test_linux_is_detected_correctly(self):
detected_os = detect_host_os()
assert_is_instance(detected_os, self.linux.__class__)
def test_linux_is_detected_correctly(self):
detected_os = detect_host_os()
assert_is_instance(detected_os, self.linux.__class__)
